Pumpsil tubing
Platinum-cured silicone tubing with ultra smooth bore and excellent flow stability. -20 ºC to 80 ºC (-4 ºF to 176 ºF).
Tubing - peristaltic
Pumps - close-coupled
500 series close-coupled pumps
Overview
Close-coupled industrial pump
Watson-Marlow 521VI/RELC, 521I/RELC, 521F/RELC, 521FX/RELC: 0 bar to 2 bar IP55 pumps fitted with LoadSure® low-pressure element pumpheads.
521 close-coupled pumps offer IP55 ingress protection for industrial environments. They offer rugged, industrial pumping, with all the pumphead features of cased drives, but at the lowest whole-life cost.
- 520REL low-pressure LoadSure element pumphead features large swept volume with sprung rollers for high accuracy
- Chemically-resistant polyphenylene sulphide track and rotor, and stainless steel rollers and bearings
- Low rotational speeds significantly increase tube life and system reliability
- Clutched rotor for rapid, effortless tube loading
- Rugged, tool-unlockable guard
Pumphead options available as standard (others available on request):
- 520R and 520R2 pumpheads for continuous tubing
- 520REL, 520REM and 520REH pumpheads for tube elements (for low, medium and high pressures)
- 501RLCA and 501RL2CA ATEX pumpheads for continuous tubing
Drive options available:
- 521VI integral inverter
- 521F fixed speed
- 521FX duplex fixed speed
- 521I inverter controlled
Features and benefits
- Flow rates up to 4,600 ml/min at 2 bar peak pressure with 520 LoadSure elements
- 520RELC pumphead features PPS (Polyphenylene Sulphide) track and rotor with stainless steel occlusion rollers to resist chemical attack and abrasive wear
- Heavy-duty pumphead construction with impact-proof safeguard
- Sprung rotor gently compresses tubing using large low friction rollers with sealed bearings, guaranteeing long tube life and accurate metering
- Fast and simple pumphead set-up using a clutched rotor for effortless element loading
Technical summary
| Max. flow rate | 4600 ml/min |
| Min. flow rate | 2.6 ml/min |
| Max. flow rate | 73 USGPH |
| Min. flow rate | 0.04 USGPH |
| Max. operating pressure | 7 bar |
| Max. operating pressure | 100 psi |
| Ambient Temperature Range | 5 °C to 40 °C |
| Ambient Temperature Range | 41 °F to 104 °F |
| Motor types | AC electric motor |
| Min. operating speed | 60 rpm |
| Max. operating speed | 291 rpm |
| Standards | ATEX 2014/34/EU, ATEX II 2G Ex h IIB T4 Gb X, CE |
| Ingress Protection | IP55 |
| Weight | 10 - 20 kg |
| Power supply | 400 V 50 Hz 3 ph |
Technical Summary table lists features available within the range. See ‘Specifications’ tab for model specific information.
Performance
521F with RC pumphead performance
| Tube bore and flow rates (ml/min) | |||||||
|---|---|---|---|---|---|---|---|
| Tube Material | Speed (rpm) | 1.6mm | 3.2mm | 4.8mm | 6.4mm | 8.0mm | 9.6mm |
| Neoprene, Sta-Pure, Chem-Sure, Tygon, Platinum-cured silicone | 60 | 26 | 110 | 240 | 420 | 660 | 950 |
| 213 | 94 | 370 | 840 | 1500 | 2300 | 3400 | |
| 291 | 130 | 510 | 1200 | 2000 | 3200 | 4600 | |
| Marprene/Bioprene TL | 60 | 25 | 100 | 230 | 400 | 630 | 910 |
| 213 | 89 | 360 | 810 | 1400 | 2200 | 3200 | |
| 291 | 120 | 490 | 1100 | 2000 | 3100 | 4400 | |
521F with R2C pumphead performance
| Tube bore and flow rates (ml/min) | |||||||
|---|---|---|---|---|---|---|---|
| Tube Material | Speed (rpm) | 1.6mm | 3.2mm | 4.8mm | 6.4mm | 8.0mm | 9.6mm |
| Neoprene, Sta-Pure, Chem-Sure, Tygon, Platinum-cured silicone | 60 | 26 | 110 | 240 | 420 | 660 | 950 |
| 213 | 94 | 370 | 840 | 1500 | 2300 | 3400 | |
| 291 | 130 | 510 | 1200 | 2000 | 3200 | 4600 | |
| Marprene/Bioprene TL | 60 | 25 | 100 | 230 | 400 | 630 | 910 |
| 213 | 89 | 360 | 810 | 1400 | 2200 | 3200 | |
| 291 | 120 | 490 | 1100 | 2000 | 3100 | 4400 | |
521F with RELC pumphead performance
| LoadSure® Element tubing flow rates (ml/min) | ||||
|---|---|---|---|---|
| Tube Material | Speed (rpm) | 3.2mm | 6.4mm | 9.6mm |
| Pumpsil, Sta-Pure PCS, Sta-Pure PFL, Neoprene | 60 | 110 | 420 | 950 |
| 213 | 370 | 1500 | 3400 | |
| 291 | 510 | 2000 | 4600 | |
| Marprene TL, Bioprene TL | 60 | 100 | 400 | 910 |
| 213 | 360 | 1400 | 3200 | |
| 291 | 490 | 2000 | 4400 | |
521F with REMC pumphead performance
| LoadSure® element tubing flow rates (ml/min) | |||
|---|---|---|---|
| Tube material | Speed (rpm) | 3.2mm | 6.4mm |
| Marprene TM, Bioprene TM | 60 | 100 | 400 |
| 213 | 360 | 1400 | |
| 291 | 490 | 2000 | |
| Sta-Pure PCS, STA-PURE PFL | 60 | 110 | 420 |
| 213 | 370 | 1500 | |
| 291 | 510 | 2000 | |
521F with REHC pumphead performance
| LoadSure® element tubing flow rates (ml/min) | ||
|---|---|---|
| Tube material | Speed (rpm) | 3.2mm |
| Marprene TH, Bioprene TH, Sta-Pure PCS | 6-60 | 12-120 |
| 21-213 | 43-440 | |
| 29-291 | 59-600 | |
501DF with RLA (ATEX) pumphead performance
| Tube bore and flow rates (ml/min) | |||||||
|---|---|---|---|---|---|---|---|
| Speed range (rpm) | 0.5mm | 0.8mm | 1.6mm | 3.2mm | 4.8mm | 6.4mm | 8.0mm |
| 62 | 2.6 | 7.6 | 26 | 120 | 250 | 390 | 620 |
| 223 | 9.3 | 27 | 95 | 410 | 900 | 1400 | 2200 |
| 281 | 12 | 34 | 120 | 520 | 1100 | 1800 | 2800 |
| 6 to 62* | 0.25-2.6 | 0.74-7.6 | 2.6-26 | 11-120 | 24-250 | 38-390 | 60-620 |
| 22 to 223* | 0.92-9.3 | 2.7-27 | 9.4-95 | 41-410 | 89-900 | 140-1400 | 220-2200 |
| 28 to 281* | 1.2-12 | 3.4-34 | 12-120 | 52-520 | 110-1100 | 180-1800 | 280-2800 |
*10:1 speed reduction available using a variable frequency inverter located in a safe area
501DF with RL2A (ATEX) pumphead performance
| Tube bore and flow rates (ml/min) | |||||||
|---|---|---|---|---|---|---|---|
| Speed range (rpm) | 0.5mm | 0.8mm | 1.6mm | 3.2mm | 4.8mm | 6.4mm | 8.0mm |
| 62 | 2.6 | 7.6 | 26 | 120 | 250 | 390 | 620 |
| 223 | 9.3 | 27 | 95 | 410 | 900 | 1400 | 2200 |
| 281 | 12 | 34 | 120 | 520 | 1100 | 1800 | 2800 |
| 6 to 62* | 0.25-2.6 | 0.74-7.6 | 2.6-26 | 11-120 | 24-250 | 38-390 | 60-620 |
| 22 to 223* | 0.92-9.3 | 2.7-27 | 9.4-95 | 41-410 | 89-900 | 140-1400 | 220-2200 |
| 28 to 281* | 1.2-12 | 3.4-34 | 12-120 | 52-520 | 110-1100 | 180-1800 | 280-2800 |
*10:1 speed reduction available using a variable frequency inverter located in a safe area
Specifications
Technical specifications
| 521F with RC pumphead | 521F with R2C pumphead | 521F with RELC pumphead | 521F with REMC pumphead | 521F with REHC pumphead | 501DF with RLA (ATEX) pumphead | 501DF with RL2A (ATEX) pumphead | |
|---|---|---|---|---|---|---|---|
| Max. flow rate | 4600 ml/min | 4600 ml/min | 4600 ml/min | 2000 ml/min | 600 ml/min | 2800 ml/min | 2800 ml/min |
| Min. flow rate | 2.6 ml/min | 2.6 ml/min | 110 ml/min | 100 ml/min | 120 ml/min | 2.6 ml/min | 2.6 ml/min |
| Max. flow rate | 73 USGPH | 73 USGPH | |||||
| Min. flow rate | 0.04 USGPH | 0.04 USGPH | |||||
| Max. operating pressure | 2 bar | 2 bar | 2 bar | 4 bar | 7 bar | 2 bar | 2 bar |
| Max. operating pressure | 30 psi | 30 psi | 30 psi | 60 psi | 100 psi | 30 psi | 30 psi |
| Ambient Temperature Range | 5 °C to 40 °C | 5 °C to 40 °C | 5 °C to 40 °C | 5 °C to 40 °C | 5 °C to 40 °C | 5 °C to 40 °C | 5 °C to 40 °C |
| Ambient Temperature Range | 41 °F to 104 °F | 41 °F to 104 °F | 41 °F to 104 °F | 41 °F to 104 °F | 41 °F to 104 °F | 41 °F to 104 °F | 41 °F to 104 °F |
| Fluid temperature range | -20 °C to 80 °C | -20 °C to 80 °C | -20 °C to 80 °C | -20 °C to 80 °C | -20 °C to 80 °C | -20 °C to 65 °C | -20 °C to 65 °C |
| Fluid temperature range | -4 °F to 175 °F | -4 °F to 175 °F | -4 °F to 175 °F | -4 °F to 175 °F | -4 °F to 175 °F | -4 °F to 149 °F | -4 °F to 149 °F |
| Motor types | AC electric motor | AC electric motor | AC electric motor | AC electric motor | AC electric motor | AC electric motor | AC electric motor |
| Min. operating speed | 60 rpm | 62 rpm | 223 rpm | ||||
| Max. operating speed | 291 rpm | 291 rpm | 291 rpm | 291 rpm | 291 rpm | 281 rpm | 281 rpm |
| Standards | CE | CE | CE | CE | CE | ATEX 2014/34/EU, ATEX II 2G Ex h IIB T4 Gb X, CE | ATEX 2014/34/EU, ATEX II 2G Ex h IIB T4 Gb X, CE |
| Ingress Protection | IP55 | IP55 | IP55 | IP55 | IP55 | IP55 | IP55 |
| Noise | <70dBb(A) at 1m | <70dBb(A) at 1m | <70dBb(A) at 1m | <70dBb(A) at 1m | <70dBb(A) at 1m | <70dB(A) at 1m | <70dB(A) at 1m |
| Weight | 10 - 15 kg | 10 - 15 kg | 10 - 15 kg | 10 - 15 kg | 10 - 15 kg | 15 - 20 kg | 15 - 20 kg |
| Weight | 22 - 33 lbs | 22 - 33 lbs | 22 - 33 lbs | 22 - 33 lbs | 22 - 33 lbs | 33 - 44 lbs | 33 - 44 lbs |
| Power supply | 400 V 50 Hz 3 ph | 400 V 50 Hz 3 ph | 400 V 50 Hz 3 ph | 400 V 50 Hz 3 ph | 400 V 50 Hz 3 ph | 400 V 50 Hz 3 ph | 400 V 50 Hz 3 ph |
| Compatible tubing bore size | 0.5, 0.8, 1.6, 3.2, 4.8, 6.4, 8, 9.6 mm | 0.5, 0.8, 1.6, 3.2, 4.8, 6.4, 8, 9.6 mm | 3.2, 6.4, 9.6 mm | 3.2, 6.4 mm | 3.2 mm | 0.5, 0.8, 1.6, 2.4, 3.2, 4.8, 6.4, 8 mm | 1.6, 3.2, 4.8, 6.4, 8 mm |
| Compatible tubing wall thickness | 1.6 mm | 2.4 mm | 1.6 mm | 2.4 mm |
521F with RC pumphead dimensions
521F with RELC pumphead dimensions
501DF with RLA (ATEX) pumphead dimensions
501DF with RL2A (ATEX) pumphead dimensions
Materials of construction
| Bearings | Stainless steel |
| Drain port assembly | Hytrel, PP (polypropylene) |
| Gearbox | Cast iron |
| Guide roller assembly | Acetal copolymer (Kematal), Stainless steel |
| Fluid connectors | PP (polypropylene), PVDF |
| Motor | Aluminium, Cast aluminium alloy |
| Mounting plate assembly | Aluminium |
| Pumphead guard | Carbon painted polycarbonate, Polycarbonate (PC) |
| Pumphead rotor assembly | Chromium plated zinc alloy, Polyphenylene sulphide (PPS), Stainless steel 303S31, Stainless steel 316, Stainless steel DIN 17224 |
| Pumphead track | Glass filled PPS (polyphenylene sulphide), Powder coated zinc alloy |
| Seals | Neoprene |
| Tube clamp assembly | Acetal copolymer (Kematal), Chromium plated zinc alloy, Stainless steel 301S21 |
Information listed covers the complete range of fixed speed pumps. For detailed specifications of individual models/components and other drive/pumphead options, refer to user manual or contact your local Watson-Marlow Fluid Technology Solutions representative.
Literature
Brochures
-
Tunnel boring (EN).pdf
PDF - 1.8mb -
Mining Sector Brochure (EN).pdf
PDF - 825.1kb -
Brewing industry (EN).pdf
PDF - 210.3kb
Datasheet
-
521F with REMC pumphead datasheet (EN).pdf
PDF - 827.3kb -
501DF with RL2A (ATEX) pumphead datasheet (EN).pdf
PDF - 1003.6kb -
521F with REHC pumphead datasheet (EN).pdf
PDF - 703.5kb -
521F with R2C pumphead datasheet (EN).pdf
PDF - 996.4kb -
501DF with RLA (ATEX) pumphead datasheet (EN).pdf
PDF - 1006.2kb -
521F with RELC pumphead datasheet (EN).pdf
PDF - 838.5kb -
521F with RC pumphead datasheet (EN).pdf
PDF - 1mb
Manuals
-
521CC manual (EN).pdf
PDF - 835.6kb -
501CC, 621CC and 701CC ATEX manual (EN).pdf
PDF - 1.8mb -
501RLA ATEX manual (EN).pdf
PDF - 3.4mb
Drives
521VI integral inverter close-coupled drives bring variable speed control, constant torque output and total reliability to the industrial environment. The drive offers 400 V three-phase, plus 110 V and 230 V single-phase power options.
- Integral inverter offering three speed ranges: 6 rpm to 60 rpm, 21 rpm to 215 rpm and 29 rpm to 291 rpm
- Integral inverter control: Local/forward/stop/reverse control and remote, analogue and digital options.
521F fixed speed drives are 400 V three-phase powered
- There is a choice of speeds: 60 rpm, 213 rpm and 291 rpm
- Flow rates from 2.5 ml/min to 4,600 ml/min
- Other speeds are available on request, please contact your local Watson Marlow Fluid Technology Group representative
521FX duplex fixed speed drives have twin pumpheads allowing two-channel pumping.
- There is a choice of speeds: 55 rpm and 183 rpm
- Twin 520 pumpheads for balanced flow in two channels
521I inverter-controlled, variable speed drives include a stand-alone inverter to control pump speed.
- Inverter can be mounted beside the pump or remotely
- Three speed ranges: 6 rpm to 60 rpm; 21 rpm to 213 rpm; 29 rpm to 291 rpm
Pumpheads
520REL LoadSure low-pressure pumphead
520REL LoadSure tube element pumphead offers up to 2 bar (30 psi) pressure and flow rates up to 3,500 ml/min.
Low-pressure elements are available in Marprene TL, Bioprene TL, Pumpsil, GORE STA-PURE PCS and GORE STA-PURE PFL with quick-release industrial or sanitary connectors.
520REM LoadSure medium-pressure pumphead
520REM LoadSure element pumphead offers up to 4 bar (60 psi) pressure and flow rates up to 1,500 ml/min.
Medium-pressure elements are available in Marprene TM, Bioprene TM, GORE STA-PURE PCS and GORE STA-PURE PFL with quick-release industrial or sanitary connectors.
520REH LoadSure high-pressure pumphead
520REH LoadSure element pumphead offers up to 7 bar (100 psi) pressure and flow rates up to 1,500 ml/min.
High-pressure elements are available in Marprene TH, Bioprene TH, and GORE STA-PURE PCS with quick-release industrial or sanitary connectors
520R2 continuous tubing pumphead
The 520R2 pumphead is designed for continuous tubing with a wall thickness of 2.4 mm. It offers up to 2 bar (30 psi) pressure and flow rates from 0.25 ml/min to 4,660 ml/min.
2.4 mm wall tubing is available in five alternative materials for almost any chemical requirement, in tube sizes ranging from 0.5 mm up to 9.6 mm internal diameter.
520R continuous tubing pumphead
The 520R pumphead is designed for continuous tubing with a wall thickness of 1.6 mm. It offers up to 2 bar (30 psi) pressure and flow rates from 0.25 ml/min to 3,000 ml/min.
1.6 mm wall tubing is available in eight alternative materials for almost any chemical requirement, in tube sizes ranging from 0.5 mm up to 8.0 mm internal diameter.
501RLCA ATEX continuous tubing pumphead
The 501RLCA is designed for continuous tubing with a wall thickness of 1.6 mm.
The 501RLCA pumphead is intended for use in areas which explosive atmospheres caused by gases, vapours or mists are likely to occur occasionally. ATEX rating for the pumphead 11 2G Exh IIB T4 G6 X.
501RL2CA ATEX continuous tubing pumphead
The 501RL2CA is designed for continuous tubing with a wall thickness of 2.4 mm.
Order Information
Product codes
521F with R2C pumphead product codes
| Pump and pumphead product codes | |
|---|---|
| Description | Partcode |
| 521F/R2C 60rpm pump | 050.8122.2L0 |
| 521F/R2C 213rpm pump | 050.8152.2L0 |
| 521F/R2C 291rpm pump | 050.8172.2L0 |
| 520R2C pumphead | 053.1031.2L0 |
| Tubing product codes | |||||
|---|---|---|---|---|---|
| Tubing bore/wall (mm) | Bioprene | Marprene | Platinum Silicone | STA-PURE PCS | Chem-Sure® |
| 1.6 / 2.4 | 933.0016.024 | 902.0016.024 | 913.A016.024 | 960.0016.024 | 965.0016.024 |
| 3.2 / 2.4 | 933.0032.024 | 902.0032.024 | 913.A032.024 | 960.0032.024 | 965.0032.024 |
| 4.8 / 2.4 | 933.0048.024 | 902.0048.024 | 913.A048.024 | 960.0048.024 | 965.0048.024 |
| 6.4 / 2.4 | 933.0064.024 | 902.0064.024 | 913.A064.024 | 960.0064.024 | 965.0064.024 |
| 8.0 / 2.4 | 933.0080.024 | 902.0080.024 | 913.A080.024 | 960.0080.024 | 965.0080.024 |
| 9.6 / 2.4 | 933.0096.024 | 902.0096.024 | 913.A096.024 | ||
521F with RELC pumphead product codes
| Pump and pumphead product codes | |
|---|---|
| Description | Partcode |
| 521F/RELC 60rpm pump | 050.8122.EL0 |
| 521F/RELC 213rpm pump | 050.8152.EL0 |
| 521F/RELC 291rpm pump | 050.8172.EL0 |
| 520RELC pumphead | 053.1031.EL0 |
| Element product codes | ||||||
|---|---|---|---|---|---|---|
| Industrial LoadSure® elements, Quick-release PVDF connectors | Sanitary LoadSure® elements, 3/4 in Sanitary PVDF connectors | |||||
| 3.2mm | 6.4mm | 9.6mm | 3.2mm | 6.4mm | 9.6mm | |
| Marprene TL | 902.0032.PFQ | 902.0064.PFQ | 902.0096.PFQ | |||
| Pumpsil | 913.A032.PFQ | 913.A064.PFQ | 913.A096.PFQ | 913.A032.PFT | 913.A064.PFT | 913.A096.PFT |
| STA-PURE PFL | 965.0032.PFQ | 965.0064.PFQ | 965.0096.PFQ | 965.0032.PFT | 965.0064.PFT | 965.0096.PFT |
| Bioprene TL | 933.0032.PFT | 933.0064.PFT | 933.0096.PFT | |||
| STA-PURE PCS | 960.0032.PFT | 960.0064.PFT | 960.0096.PFT | |||
521F with REMC pumphead product codes
| Pump and pumphead product codes | |
|---|---|
| Description | Partcode |
| 521F/REMC 60rpm pump | 050.8122.EM0 |
| 521F/REMC 213rpm pump | 050.8152.EM0 |
| 521F/REMC 291rpm pump | 050.8172.EM0 |
| 520REMC pumphead | 053.1031.EM0 |
| Element product codes | ||||
|---|---|---|---|---|
| Industrial LoadSure® elements, Quick-release PVDF connectors | Sanitary LoadSure® elements, 3/4 in Sanitary PVDF connectors | |||
| 3.2mm | 6.4mm | 3.2mm | 6.4mm | |
| Marprene TM | 902.P032.PFQ | 902.P064.PFQ | ||
| STA-PURE PFL | 965.M032.PFQ | 965.M064.PFQ | 965.M032.PFT | 965.M064.PFT |
| Bioprene TM | 933.P032.PFT | 933.P064.PFT | ||
| Sta-Pure PCS | 960.M032.PFT | 960.M064.PFT | ||
521F with REHC pumphead product codes
| Pump and pumphead product codes | |
|---|---|
| Description | Partcode |
| 521F/REHC 60rpm pump | 050.8122.EH0 |
| 521F/REHC 213rpm pump | 050.8152.EH0 |
| 521F/REHC 291rpm pump | 050.8172.EH0 |
| 520REHC pumphead | 053.1031.EH0 |
| Element product codes | ||
|---|---|---|
| Industrial LoadSure® elements, Quick-release PVDF connectors | Sanitary LoadSure® elements, 3/4 in Sanitary PVDF connectors | |
| 3.2mm | 3.2mm | |
| Marprene TH | 902.H032.PFQ | |
| Bioprene TH | 933.H032.PFT | |
| Sta-Pure PCS | 960.H032.PFQ | 960.H032.PFT |
501DF with RLA (ATEX) pumphead product codes
| ATEX pump | Speed (rpm) | Motor | Product code |
|---|---|---|---|
| 501DF/RLA ATEX pump c/w PTC’s plated for inverter use | 62 | 400V 50Hz 3ph 0.18kW | 050.8622.L00 |
| 223 | 400V 50Hz 3ph 0.18kW | 050.8652.L00 | |
| 281 | 400V 50Hz 3ph 0.18kW | 050.8672.L00 |
10:1 speed reduction available using variable frequency inverter, located in a safe area
| ATEX pumphead | Description | Product code |
|---|---|---|
| 501RLA | Close coupled pumphead for 1.6mm wall thickness tubing | 053.0002.A00 |
| 501RLGA | Close coupled pumphead for 1.6mm wall thickness STA-PURE tubing | 053.0022.A0G |
501DF with RL2A (ATEX) pumphead product codes
| ATEX pump | Speed (rpm) | Motor | Product code |
|---|---|---|---|
| 501DF/RL2A ATEX pump c/w PTC’s plated for inverter use | 62 | 400V 50Hz 3ph 0.18kW | 050.8622.L20 |
| 223 | 400V 50Hz 3ph 0.18kW | 050.8652.L20 | |
| 281 | 400V 50Hz 3ph 0.18kW | 050.8672.L20 |
10:1 speed reduction available using variable frequency inverter, located in a safe area
| ATEX pumphead | Description | Product code |
|---|---|---|
| 501RL2A | Close coupled pumphead for 2.4mm wall thickness tubing | 053.0002.A20 |
| 501RL2GA | Close coupled pumphead for 2.4mm wall thickness STA-PURE tubing | 053.0022.A2G |
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